On Sat, Jan 18, 2014 at 12:52 AM, Ky?sti M?lkki wrote: > > On 01/17/2014 01:01 PM, Timothy Potter wrote: > > Hi, > > I'm trying to get Coreboot with SeaBIOS running on a Chromebox. I > > followed the page about compiling Coreboot for a Chomebook 550, assuming > > they are similar in some respects. Unfortunately none of the builds have > > booted. Just the blue power light comes on at best. > > I'm wondering if anyone knows which is the USB Debug Port or the pin > out > > of the LPC bus connector? I've got one of those cheap Mini PCI Express > > POST diagnostic cards but can't work out how to wire up. I've also got > an > > old Android phone with the ECHI debug gadget compiled into the kernel. > I've > > tried connecting that to every USB port on the Chromebox but never get > any > > output. > > > > Hope someone can help. > > > > Cheers, > > Tim. > > Hi Tim > > Did you apply the two patches for EHCI gadget available here: > http://www.coreboot.org/EHCI_Gadget_Debug > > Try this without Chromebox first: Connect phone with any normal USB > host. Run lsusb -v on the host to verify your Android exports USB debug > descriptor. Then post system logs from both sides of the connection. > > > Now for the physical USB port to use. If you can boot your Chromebox > with the original flash image, a working port should appear as "usb > 1-1.2" or "usb 2-1.2" in the system log when you connect any USB device. > > For coreboot configuration with Intel platform, HCD_INDEX=1 maps to > 0:1d.0 and HCD_INDEX=2 maps to 0:1a.0. It's reversed order, like in the > datasheets. > > Hi Kyösti, Yes, I applied the patches, although I'm using kernel 2.6.32 so I had to add some of the chunks manually. You can see the changes here:
https://github.com/DengueTim/jordan-kernel/commit/9c2420d8e82c2e122fb56b5480f1801829cfc40c I may have got something wrong. I suspect it's a problem on the phone side as the EHCI debug gadget doesn't show up in lsusb. When I have more time I'll post the system logs and try patching and building a 3.0.3 kernel for the phone. It's a Motorola Defy. There doesn't appear to be any working kernel new than that. Regards, Tim.
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